Roller skate clamp



May 3, 1938. l. JAFFEE ROLLER SKATE CLAMP Filed March 5, 1955 FIG. 2

FIG 4 INVENTOR. Jew/v6 L/AFFEE w ?,Z/6(

e I I ATTORNEY.

Patented May 3, 1938 P T O FI RQLIJER SKATE oLAMr 7 Irving Jaifee, NewYork, N. Y. Application Mamas, 1935, Serial No. 9.35s

60laims. (o1. 2s0 11.s2) a vention itself, both as to its fundamentalprin This invention relates to skates and more particularly to a newandimproved toe clamp, particularly adapted for use is not limitedthereto and edge of the shoe, because theclamp does not as a matter offact, it is not.

Attempts to use a skate under such conditions are likely to result infalls with-attendant injury. One reason for this difficulty is thatinthe case of a swivel clamp the freedom of motion allows the clamp toslide longitudinally of the shoe, shifting its position. Since childrensshoes are customarily made very broad at the toe and have littlecurvature in the radius of attachment of the clamp, it requires-carefuladjustment of such clamps to secure the skate firmly and securely inposition and many children.

are incapable of doing so. a

It is an object of this invention. to provide a skate clamp which willconform to the curvature of the shoe sole, which duced likelihood ofworking loose and which is so constructed and arranged. as to limittheswiveling movement of the outer portion of 'theiclam'p within suchlimits that while the clamp may adjust itself through a sufiicientamount'to engage the shoe sole firmly accidentally slipping off, it.nevertheless cannot swing so far in either direction as to permit Stillother objects and advantages of my invention will be apparent from thespecification. The features of novelty which I believe to becharacteristic of my invention are set forth with particularity in theappended claims. My in- As-such clamps are ordi who may not understandthe necessity.

will engage the sole firmly and tenaciously without injury to it-, withre-:

and without likelihoodv of ciples and as to its particular embodimentswill bestbe understood by reference to the specification andaccompanying drawing, in which Fig. 1 is a top plan view of a skatewitha clamp according to my invention mounted thereon;

Fig. 2 is a sideelevation, partly in section, of the same; p Fig, 3 is abottom plan view thereof;

Fig. 4 is. a top plan view of a modified form of a clampaccording to myinvention;

Fig. 5 is abottom plan thereof V a Fig. 6 is a side elevational viewpartly in section; and

r Fig. 7 is a fragmentary vertical line 1-1 of Fig. 1.

'Referring now more particularly to Fig. 1, l designates the sole of theskate at the toe portion. Secured to the sole I haveindicated theextremities 2 of the structure which carries the front wheels. Since themounting and arrangement section on the of the wheel structure forms perse no part of my invention the same grammatic form. v

Projecting downwardly from the under side of the sole from the positionof the toe clamp, there is provided an arm 3 bifurcated at its lowerextremity to provide spacedportions 3a and 3b. The narrowed upper end ofthis arm may be the sole portion and its upper extremity headed over.For the purpose ofadjusting the Width of the clamp there is provided isshown only in diamay be provided with a squared portion to receive awrench.

The left and right clamps comprise horizontally extending. portions 6aand 6b having downturned inner portions 1a and 1b provided with athreaded hole engaging .the threaded portions 411. and 4b. Thehorizontal portion may be adjustably secured on the skate by means of adownturned flange on each edge of the sole as 8a and 8b at the forwardside, 9a, and at the rear side, having inwardly faced notches l9. and IIto receive the horizontal portions 611 and 6?). Thus by rotating thebolt the clamps will move inwardly and outwardly, depending on thedirection of rotation.

The sole engaging portion I 2a andJZb is an L-shaped. piece preferablypivotally secured on the sliding portion byrivets i311 and I3b-and theupstandingrportion is. preferably bent inwardly slightly at the top asat Ma may be provided on opposite edges of the clamp as at l5b toreceive a band of elastics I60. and [61).

Thus it will be seen that the sole engaging and Mb: and notches portionmay swing through an are upon the horizontal portion. For the purpose oflimiting this movement I may extend the horizontal portion inwardly on ataper as at l8a and Nb so that at the desired limit of forward movementof the outside of the clamp, the tapered portion strikes against theforward face of the plates 9a and 8b, as indicated by the dotted linesin Fig. 3.

The limit of movement in the other direction is preferably provided bycutting away the outer extremity of the horizontal portion at an angleoutwardly to the rear as at Ila and Ilb so that at the limit of rearwardmovement the outermost part of the horizontal portion engages thevertical portion of the sole engaging part, as indicated by the positionof the left-hand clamp in Fig. 3.

It will be understood, however, that the plates 8a and 812 may serve tolimit the backward movement of the clamp, if desired, but in thisinstance it would be necessary to extend them further to the rear and Iprefer to utilize the contact between the outer and inner portions ofthe clamp for providing the rear stop.

Referring now more particularly to Figs. 4, and 6, I have shown amodified form of clamp secured to the skate in a somewhat difierentmanner. In this instance no down-turned flanges may be provided on theskate sole, but there may be instead rivets 20a. and 20b extendingdownwardly from the sole of the skate and having an enlarged lower headspaced from the sole of the skate by a distance sufiicient to permit thehorizontal portion of the clamp, each of which is provided with slots 2la. and 2 lb respectively, to be held against the sole of the skatethereby. The general formation of the horizontal portion of the clampand of the sole engaging portion is otherwise similar to that alreadydescribed with the exception that the sole engaging portion in thisinstance is pivoted at the rear outward extremity of the horizontalportion of the clamp and the pivoted portion is not provided with theinwardly extending arm as before.

In this instance 22a and 22b designate the rivets about which the outerportion of the clamp is swingable and, as before, the faces 23:]. and231) project outwardly to the rear, and the rear extremity contactingwith the vertical face of the sole engaging portion forms a stoplimiting the rearward movement. In this instance it may be desirable toincrease the angle at which the outer ends of the horizontal portionsare cut away and if desired the configuration of the edges 23a and 231)may be made such that the striking of the vertical portion against theforward edge constitutes a stop limiting the forward motion.

While I have shown and described certain preferred embodiments of myinvention it will be understood that modifications and changes may bemade without departing from the spirit and scope thereof, as will beclear to those skilled in the art.

I claim:

1. In a skate clamp, in combination, a pair of transverse clampingmembers secured to the under side of the sole of the skate fortransverse sliding movement, threaded means for driving said clampingmembers, a pair of L-shaped shoeengaging clamps respectively mounted toswivel upon the external part of said transverse members, eachtransverse member and cooperating Lshaped clamp having portions arrangedto engage each other at a predetermined angular position of saidL-shaped clamp, whereby the backward movement of said swiveled L-shapedclamp is limited.

2. In a skate clamp, in combination, a pair of transverse clampingmembers secured to the under side of the sole of the skate fortransverse sliding movement, threaded means for driving said clampingmembers, a pair of L-shaped shoeengaging clamps respectively swiveledupon the external part of said transverse members, each transversemember and cooperating L-shaped clamp having portions arranged to striketo limit the backward movement of said L-shaped clamp, the verticalsole-engaging portion of said clamp having a narrowed zone to positionan elastic for contact with the shoe sole.

3. In a skate clamp, in combination, a pair of transverse clampingmembers secured to the under side of the sole of the skate fortransverse sliding movement, threaded means for driving said clampingmembers, a pair of L-shaped shoeengaging clamps respectively mounted toswivel upon the external part of said transverse members, and means forlimiting the turning movement of said clamp in either direction to lessthan 90.

4. In a skate clamp, in combination, a pair of transverse clampingmembers secured to the under side of the sole of the skate fortransverse sliding movement, threaded means for driving said clampingmembers, a pair of L-shaped shoeengaging clamps swiveled upon theexternal part of said transverse members, said L-shaped clamps and saidtransverse members having portions arranged to strike to limit thebackward movement of the clamp, and said L-shaped clamp having aprojection beyond the pivot arranged to strike an abutment to limit theforward move ment of the clamp.

5. In a skate clamp,'in combination, a pair of transverse clampingmembers secured to the un der side of the sole of the skate fortransverse sliding movement, and having a longitudinal slot therein, theforward outer ends of said transverse members being cut away, a pair ofL-shaped shoe-engaging clamps respectively swiveled upon the rear outerextremity of said transverse members, said L-shaped clamps and saidtransverse members having portions arranged to strike to limit thebackward movement of the said L- shaped clamps.

6. In a skate clamp, in combination, a pair of transverse clampingmembers secured to the under side of the sole of the skate fortransverse sliding movement, threaded means for driving said clampingmembers, a pair of L-shaped shoeengaging clamps swiveled upon theexternal part of said transverse members, the vertical portion of eachshoe-engaging clamp having a reduced width intermediate its ends and aband of buffer material surrounding said reduced portion, saidtransverse members and said L-shaped clamps having portions arranged toengage each other at a predetermined angular position of said L- shapedclamp, whereby the backward movement of said L-shaped clamps is limited.

IRVING J AFFEE.

